void testGetInfoWithTypeWhenNull() {
        response = new Trans2QueryPathInformationResponse(mockConfig, FileInformation.FILE_BASIC_INFO);

        assertThrows(NullPointerException.class, () -> {
            response.getInfo(FileBasicInfo.class);
        });
    }

    @Test
    @DisplayName("Test getInfo with compatible type")
    void testGetInfoWithCompatibleType() throws Exception {

        assertEquals("Not supported", ex.getMessage());
    }

    @Test
    @DisplayName("Null delegate causes NPE")
    void nullDelegate() {
        assertThrows(NullPointerException.class, () -> {
            new FileEntryAdapterIterator(parent, null, null) {
                @Override
                protected SmbResource adapt(FileEntry e) {
                    return resource;

    void nullReference_throwsNPE() {
        // Arrange
        FileEntry e = null;
        // Act & Assert: demonstrate invalid usage results in NPE
        assertThrows(NullPointerException.class, () -> e.getName());
    }

    @Nested
    @DisplayName("Mockito stubbing for edge cases")
    class MockitoEdgeCases {
        @Test

      assertEquals(0, cache.size());

      entry.setValue(3);
      assertEquals(1, cache.size());
      assertEquals(3, cache.getIfPresent(1));
      checkValidState(cache);

      assertThrows(NullPointerException.class, () -> entry.setValue(null));
      checkValidState(cache);
    }
  }

  /* ---------------- Local utilities -------------- */

        TestWebApiManager manager = new TestWebApiManager("/api");

        try {
            manager.process(null, null, null);
            assertTrue(manager.isProcessCalled());
        } catch (NullPointerException e) {
            // Expected for some implementations
        }
    }

    public void test_process_withStatusCodeSetting() throws IOException, ServletException {

    @Override
    public OutputStream openStream() {
      return ByteStreams.nullOutputStream();
    }
  }

  // Compare by toString() to satisfy 2 properties:
  // 1. compareTo(null) should throw NullPointerException
  // 2. the order is deterministic and easy to understand, for debugging purpose.
  @SuppressWarnings("ComparableType")
  private static final class ByToString implements Comparable<Object>, Serializable {

  // creation cost.
  @CanIgnoreReturnValue
  static Object checkElementNotNull(Object element, int index) {
    if (element == null) {
      throw new NullPointerException("at index " + index);
    }
    return element;
  }

        // Arrange
        nodeStatusRequest = new NodeStatusRequest(mockConfig, null);
        byte[] dst = new byte[100];

        // Act & Assert
        assertThrows(NullPointerException.class, () -> {
            nodeStatusRequest.writeBodyWireFormat(dst, 0);
        });
    }

    @Test
    void multipleWriteBodyWireFormat_shouldProduceSameResult() {
        // Arrange

        });
    }

    @Test
    @DisplayName("Should handle parsing null message bytes")
    void testNullMessageBytes() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            new Type1Message((byte[]) null);
        });
    }

    @Test
    @DisplayName("Should create string representation")
    void testStringRepresentation() {

   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *
   * @throws NullPointerException if any key or value in {@code multimap} is null
   */
  public static <K, V> ImmutableSetMultimap<K, V> copyOf(
      Multimap<? extends K, ? extends V> multimap) {
    return copyOf(multimap, null);
  }